Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #7 Apr 14 2023 09:46:01
%S 1,1,1,1,1,1,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,1,1,2,2,1,1,3,3,1,1,3,3,1,
%T 1,3,3,1,1,2,2,1,1,3,3,1,1,3,4,3,1,1,3,4,3,1,1,3,4,3,1,1,3,5,4,1,1,3,
%U 4,3,1,1,3,5,5,3,1,1,3,5,6,4,1,1,3,5,5,3,1,1,3,5,6,5,3,1
%N Array read by rows: row n (n>= 1) gives the Betti numbers for the n-th element of the Weyl group of type A3 (in Goresky's standard ordering).
%C The array has 24 rows.
%H Mark Goresky, <a href="http://www.math.ias.edu/~goresky/tables.html">Tables of Kazhdan-Lusztig polynomials</a>
%H <a href="/index/Gre#groups">Index entries for sequences related to groups</a>
%e Array begins:
%e 1
%e 1 1
%e 1 1
%e 1 1
%e 1 2 1
%e 1 2 1
%e 1 2 1
%e 1 2 1
%e 1 2 1
%e 1 2 2 1
%e 1 3 3 1
%e 1 3 3 1
%e 1 3 3 1
%Y Cf. A115571-A115583.
%K nonn,tabf,fini,full
%O 1,9
%A _Roger L. Bagula_, Mar 02 2006